.cssTran-enter, .cssTran-appear {
  opacity: 0;
}
.cssTran-enter-active, .cssTran-appear-active {
  opacity: 1;
  transition: all 1500ms;
}
.cssTran-enter-done {

}
.cssTran-exit {
  opacity: 1;
}
.cssTran-exit-active {
  opacity: 0;
  transition: all 1500ms;
}
.cssTran-exit-done {
  opacity: 0;
}